mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
220 lines
5.7 KiB
HTML
220 lines
5.7 KiB
HTML
<!DOCTYPE html>
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<head>
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<!--
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Copyright (C) 2007 Apple Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-->
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<title>SunSpider access-nbody</title>
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</head>
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<body>
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<h3>access-nbody</h3>
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<div id="console">
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</div>
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<script>
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var _sunSpiderStartDate = new Date();
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/* The Great Computer Language Shootout
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http://shootout.alioth.debian.org/
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contributed by Isaac Gouy */
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var PI = 3.141592653589793;
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var SOLAR_MASS = 4 * PI * PI;
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var DAYS_PER_YEAR = 365.24;
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function Body(x,y,z,vx,vy,vz,mass){
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this.x = x;
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this.y = y;
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this.z = z;
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this.vx = vx;
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this.vy = vy;
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this.vz = vz;
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this.mass = mass;
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}
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Body.prototype.offsetMomentum = function(px,py,pz) {
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this.vx = -px / SOLAR_MASS;
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this.vy = -py / SOLAR_MASS;
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this.vz = -pz / SOLAR_MASS;
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return this;
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}
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function Jupiter(){
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return new Body(
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4.84143144246472090e+00,
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-1.16032004402742839e+00,
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-1.03622044471123109e-01,
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1.66007664274403694e-03 * DAYS_PER_YEAR,
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7.69901118419740425e-03 * DAYS_PER_YEAR,
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-6.90460016972063023e-05 * DAYS_PER_YEAR,
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9.54791938424326609e-04 * SOLAR_MASS
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);
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}
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function Saturn(){
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return new Body(
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8.34336671824457987e+00,
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4.12479856412430479e+00,
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-4.03523417114321381e-01,
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-2.76742510726862411e-03 * DAYS_PER_YEAR,
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4.99852801234917238e-03 * DAYS_PER_YEAR,
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2.30417297573763929e-05 * DAYS_PER_YEAR,
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2.85885980666130812e-04 * SOLAR_MASS
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);
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}
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function Uranus(){
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return new Body(
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1.28943695621391310e+01,
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-1.51111514016986312e+01,
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-2.23307578892655734e-01,
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2.96460137564761618e-03 * DAYS_PER_YEAR,
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2.37847173959480950e-03 * DAYS_PER_YEAR,
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-2.96589568540237556e-05 * DAYS_PER_YEAR,
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4.36624404335156298e-05 * SOLAR_MASS
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);
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}
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function Neptune(){
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return new Body(
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1.53796971148509165e+01,
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-2.59193146099879641e+01,
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1.79258772950371181e-01,
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2.68067772490389322e-03 * DAYS_PER_YEAR,
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1.62824170038242295e-03 * DAYS_PER_YEAR,
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-9.51592254519715870e-05 * DAYS_PER_YEAR,
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5.15138902046611451e-05 * SOLAR_MASS
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);
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}
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function Sun(){
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return new Body(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, SOLAR_MASS);
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}
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function NBodySystem(bodies){
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this.bodies = bodies;
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var px = 0.0;
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var py = 0.0;
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var pz = 0.0;
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var size = this.bodies.length;
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for (var i=0; i<size; i++){
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var b = this.bodies[i];
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var m = b.mass;
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px += b.vx * m;
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py += b.vy * m;
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pz += b.vz * m;
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}
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this.bodies[0].offsetMomentum(px,py,pz);
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}
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NBodySystem.prototype.advance = function(dt){
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var dx, dy, dz, distance, mag;
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var size = this.bodies.length;
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for (var i=0; i<size; i++) {
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var bodyi = this.bodies[i];
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for (var j=i+1; j<size; j++) {
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var bodyj = this.bodies[j];
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dx = bodyi.x - bodyj.x;
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dy = bodyi.y - bodyj.y;
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dz = bodyi.z - bodyj.z;
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distance = Math.sqrt(dx*dx + dy*dy + dz*dz);
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mag = dt / (distance * distance * distance);
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bodyi.vx -= dx * bodyj.mass * mag;
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bodyi.vy -= dy * bodyj.mass * mag;
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bodyi.vz -= dz * bodyj.mass * mag;
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bodyj.vx += dx * bodyi.mass * mag;
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bodyj.vy += dy * bodyi.mass * mag;
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bodyj.vz += dz * bodyi.mass * mag;
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}
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}
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for (var i=0; i<size; i++) {
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var body = this.bodies[i];
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body.x += dt * body.vx;
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body.y += dt * body.vy;
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body.z += dt * body.vz;
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}
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}
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NBodySystem.prototype.energy = function(){
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var dx, dy, dz, distance;
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var e = 0.0;
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var size = this.bodies.length;
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for (var i=0; i<size; i++) {
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var bodyi = this.bodies[i];
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e += 0.5 * bodyi.mass *
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( bodyi.vx * bodyi.vx
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+ bodyi.vy * bodyi.vy
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+ bodyi.vz * bodyi.vz );
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for (var j=i+1; j<size; j++) {
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var bodyj = this.bodies[j];
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dx = bodyi.x - bodyj.x;
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dy = bodyi.y - bodyj.y;
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dz = bodyi.z - bodyj.z;
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distance = Math.sqrt(dx*dx + dy*dy + dz*dz);
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e -= (bodyi.mass * bodyj.mass) / distance;
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}
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}
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return e;
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}
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var ret;
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for ( var n = 3; n <= 24; n *= 2 ) {
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(function(){
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var bodies = new NBodySystem( Array(
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Sun(),Jupiter(),Saturn(),Uranus(),Neptune()
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));
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var max = n * 100;
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ret = bodies.energy();
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for (var i=0; i<max; i++){
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bodies.advance(0.01);
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}
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ret = bodies.energy();
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})();
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}
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var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
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document.getElementById("console").innerHTML = _sunSpiderInterval;
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</script>
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</body>
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</html>
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